Berkshire Hathaway Chief Executive Warren Buffett challenged Donald Trump to meet with him so they could both answer questions about their tax returns. Both Buffett and Trump are currently being audited, and Trump has cited the audit as the reason he will not release his tax returns.

Buffett told Hillary Clinton supporters in his native Nebraska that they are the reason the Republican nominee is afraid to release his tax returns.

"You're only afraid if you have something to be afraid about," Buffett said. "He's not afraid because of the IRS. He's afraid because of you."

In what could be a close election, every electoral vote matters. And so at an event in Omaha on Monday to encourage a huge voter turnout there on Nov. 8, billionaire Warren Buffett was offering free rides to the polls.

Hillary Clinton did one better.

“Warren and I will dance in the streets of Omaha together,” she promised, saying she'd return as president if voter turnout in the district is highest in the country.

Aug. 1, 2016, 4:22 p.m.

Protesters rally against police brutality near New York City Hall. (Drew Angerer / AFP/Getty Images)

Days after the close of the Republican and Democratic conventions, Black Lives Matter-related groups on Monday endorsed a wide-ranging platform intended to influence political candidates before the November election.

It marks the first time that Black Lives Matter, better known for its widespread protests against police shootings of black Americans, has officially entered the national political fray in terms of policy. The group’s members have been criticized for being heavy on protest and light on policy.

The platform, which calls for “black liberation,” makes 40 policy recommendations. Some are mainstream, such as calling for an end to the death penalty — something the Democratic Party has also endorsed in its platform. Others are more radical, such as reparations, including free public tuition to public universities, for “past and continuing harm” against black people.

He'd put forth an economic agenda to reduce poverty, tackle corporate loopholes and reform the tax code, all based on the conservative ideals of open markets, free trade and slashed government spending.

"We want to be known for this. We want to run on this. We want to earn the right to put this in place," Ryan told attendees Monday afternoon at the Koch brothers-organized event. "That’s the kind of validating election we’re seeking."